Pyruvate Dehydrogenase Complex Activation as a Strategy to Ameliorate Metabolic Disease

This project is focused on mitochondrial form and function to explore whether activation of the pyruvate dehydrogenase (PDH) complex can be a viable strategy to ameliorate metabolic disease. Growing from observations in which alterations in mitochondrial calcium handling produced unexpected impairments in ATP production, this work aims to build on how mitochondrial ultrastructure and internal organization govern metabolic behavior. The current work frames PDH complex activation within a broader effort to understand and manipulate mitochondrial metabolism at spatial and systems levels.

Short-term research goals emphasize demonstrating that ultrastructure—the alignment, distribution and connectivity of mitochondrial compartments—is a major determinant of metabolic outcomes. Within that conceptual framework, PDH complex activation is considered both a mechanistic probe and a potential therapeutic lever. Activating PDH shifts substrate flux toward mitochondrial oxidation of pyruvate, and studying this shift in the context of realistic mitochondrial architectures is expected to reveal how structure modulates functional responses. The project integrates experimental investigations with the development of sophisticated spatial models of mitochondrial metabolism so that observed functional changes can be explicitly linked to structural features. These computational and conceptual models aim to move beyond correlative description toward causal explanation of how local organization influences whole-organelle performance.

The long-term aspiration of this research is to translate fundamental insights about mitochondrial structure–function relationships into new therapeutic approaches for mitochondrial and metabolic disorders. By combining experimental data gathered by a multidisciplinary team—students, postdoctoral researchers and trainees in diverse degree paths—with spatially resolved, mechanistic models, the research intends to identify conditions under which PDH activation meaningfully restores or improves ATP production and overall cellular energy balance. 

The work builds on techniques for isolating and interrogating mitochondria, measuring metabolic flux and ATP production, and characterizing ultrastructural organization. Computational modeling will synthesize these data to test hypotheses about causality and to predict how targeted manipulations—such as PDH activation—propagate through spatially heterogeneous mitochondrial networks.

If successful, the research could open new avenues for therapeutic intervention in metabolic disease by identifying structural or functional vulnerabilities that can be corrected to restore energetic health. Equally important, the program aims to train students and collaborators in integrative approaches that bridge experimental and computational mitochondrial biology.